Combined valve and packing.



No. 759,514. PATENTED MAY 10, 1904.

' T. GRANT, DBCD.

wyw. HOLT. ADMINISTRATOR.

COMBINED VALVE AND PACKING.

APPLICATION I ILED APR. 2, 1901.

no MODEL.

8mm mamas 6 71mm.

Qjdb @WMY/L No. 759,514. 7 Patented May 10, 1904.

UNITED STATES PATENT OEEIc-E.

THOMAS GRANT, OF TOTTENVILLE, NEl/V YORK, ASSI(.}NOR OF ONE-HALF TO HARTWIG A. COHEN, OF DELAMAR, NEVADA; WILLIAM T. l-IOLT ADMINISTRATOR OF SAID THOMAS GRANT, DECEASED.

COMBINED VALVE AND PACKING.

SPECIFICATION forming part of Letter; Patent No. '7 59,514, dated May 10, 1904:.

Application filed April 2, 1901. Serial No. 54,036. (No model.)

T whom it m Z/ COW/067%: butting against the flexible inlet valve and Be it known that I, THOMAS GRANT, a citipacking I. zen of the United States, and a resident of The plunger I) consists of the barrel (Z with Tottenville, borough of Richmond, in the the enlarged head (5 bolted thereto, which 5 county of Richmond and State of New York, latter is smaller than the internal diameter of haveinvented certain new anduseful Improvethe cylinder A to enable it to actuate as a ments in a Combined Valve and Packing, of transfer-piston. A ring (1, smaller than the which the following is a specification. internal diameter of the cylinder, projects 55 My invention relates to combined valves from the barrel d and supports a spring g, on IO and packings. the end of which is placed the angular ring The object of the invention is the produch, which butts against the flexible plungertion of a cylinder with a piston in which the valve and packing P. The plunger D is made valves actuating therein also constitute packof two diameters to secure the compression of 60 ings. the air or vapor during both its forward and 5 In the accompanying drawings my invenbackward strokes, and its smaller diameter is tion is shown applied to a compressor, and it large enough for its proper maintenance is evident that the improvements may be apthrough the cylinder-head C. It is made holplied to many different types of cylinders with low for lightness and to allow a circulation of 5 reciprocating pistons. water through the same by means of the di- Figure 1 shows avertical axial longitudinal vision-plate d and piping of".

section of a compressor with my improved An internal beveled rmg a pro ects from combined packings and valves. Fig. 2 reprethe cylinder A with an internal diameter sents an end View of Fig. 1. Fig. 3 shows a larger than the barrel (Z. A flexible ring E 7 section of Fig. 1 on the line a: Fig. 4 is a butts against the cylinder-head O with an an- 5 partial section of Fig. I on the line 3 ;2 gular ring it adjacent to the same, and a The compressor is shown to consist of the spring g is secured next to the said ring, water-jacketed cylinder Awith cylinder-heads which spring is covered by a second angular B and O, a reciprocating plunger D actuating ring 70 against which latter butts the flexible 75 therein, an inlet-valve I, plunger-valve P, outoutlet-valve O.

3 let-valve O, and plunger-packing E. The It will be noted that the valve I is beveled cylinder-head B is bolted to the barrel of the on its inner face to suit its seat 7) on the cylcylinder in the ordinary way and contains a inder-head B, and the outside cylindrical surcircular cavity Z), which constitutes a reserface fits against the internal surface of the voir or receiving-chamber for the inlet-openbarrel A, and the ring-valve I being made of ing 6 and the said reservoir communicates flexible material will effectually close the cirwith the inside of the cylinder through the ancular port 6 when it is on its seat. nular port 6 which is obtained by making The ringvalves P and O are of similar the inside end of the cylinder-head B smaller shape and material and tightly close the ports in diameter than the internal diameter of the d and r respectively.

4 cylinder. The ring-packing E is beveled on its exter- A retaining-barrel F is secured to the cylinnal surface and effectually packs the barrel der-head B with the bolt f, which passes (Z, which reciprocates through the cylinderthrough the hollow boss 7f. The ring F prohead O. 9 jects from the end of the barrel F and is An outlet-passage a is provided between smaller than the internal diameter of the cylthe ring a and the cylinder-hcad O, and the inder A and supports the spring g, on the openings a a allow water circulation in the end of which is placed the angular ring 7t, jacket of the cylinder.

To operate the compressor, the plunger is reciprocated by any suitable source of power through the rod H, and when the plunger is moving in the direction shown by the arrow the inlet-valve I is opened by the suction of the plunger, the valve P is closed by the pressure on the front side of the same, and the outlet-valve O is kept open. A quantity of air or vapor is drawn into the barrel of the cylinder between the cylinder-head B and the enlarged head (Z of the plunger, and the air or vapor on the other side of the enlarged head is both compressed and forced through the outlet-valve O and opening a. On the return stroke of the plunger in the opposite direction of the arrow the pressure in the cylinder closes the inlet-valve I, opens the valve P, and closes the outlet-valve 0. While the plunger is moving in the latter direction, the air or vapor is transferred from the inlet to the outlet end of the cylinder and is at the same time compressed by virtue of the space displaced by the entering of the plunger 1) into the cylinder. lVhen the plunger again moves in the direction shown by the arrow, the air or Vapor between the enlarged head (Z and the valve 0 is again compressed, and when it reaches a higher pressure than the air or vapor contained beyond the outlet-valve O the said valve opens to allow the escape of the compressed air or gas.

It will plainly be seen that by this novel combination of parts a compound compressor is obtained with only one cylinder and that combined valves and packings are secured which can be maintained absolutely tight.

Having described my invention, I desire to secure by United States Letters Patent and claim 1. The combination of a plunger, a cylinderhead with .a beveled seat through which said plunger passes, an annular projection on the inner surface of said cylinder and having a beveled valve-seat, a port being left between said projection and said plunger, wedge-shaped rings of yielding material fitting around said plunger, and a single spring for pressing said rings against said seats.

2. The combination of a cylinder of a given diameter, a plunger-head of smaller diameter having a beveled periphery and serving as a valve-seat, annular ports 5 (Z for said cylinder and having beveled valve-seats, Wedgeshaped annular packing-valves of yieldingmaterial fitting all of said seats, and springs pressing said valves against said beveled valveseats and against the inner surface of said cylinder, said valves being adapted to be opened by pressure opposed to that exerted by the springs.

3. In a compressor the combination of a cylinder of a' given diameter, a plunger with a plunger-head of smaller diameter than the cylinder, the plunger-head having a beveled periphery, a wedge-shaped annular packingvalve of yielding material fitting said plungerhead, aflange upon the plunger, aspring pressing from said flange upon said valve to press it against the beveled periphery of the plungerhead, an annular port with beveled valve-seat in the cylinder-head B of said compressor,a second wedge-shaped annular valve of yielding material, a spring forcing said valve against said seat and against the inner surface of said cylinder, a second cylinder-head C through which said plunger passes,and havingabeveled packing-seat, an annular projection a on the inner surface of said cylinder, and having between said projection and said plunger, a beveled valve-seat, a port being formed wedge-shaped rings of yielding material fitting around said plunger, and a spring forcing the last two named rings against their respective seats.

Signed at New York, in the county of New York and State of New York, this 28th day of March, A. D. 1901.

THOMAS GRANT. 

